Mitsubishi Electric MR-J4 Instruction Manual page 555

17. APPLICATION OF FUNCTIONS
(a) Parameter setting
Setting [Pr. PX25] and [Pr. PX28] as follows will enable SEMI-F47 function.
Parameter
PX25
PX28
Enabling SEMI-F47 function will change operation as follows.
1) The voltage will drop in the control circuit power with "Rated voltage × 50% or less". 200 ms later,
[AL. 10.1 Voltage drop in the control circuit power] will occur.
2) [AL. 10.2 Voltage drop in the main circuit power] will occur when bus voltage is as follows.
Table 17.6 Voltages which trigger [AL. 10.2 Voltage drop in the main circuit power]
3) MBR (Electromagnetic brake interlock) will turn off when [AL. 10.1 Voltage drop in the control
circuit power] occurs.
(b) Requirements conditions of SEMI-F47 standard
Table 17.7 shows the permissible time of instantaneous power failure for instantaneous power
failure of SEMI-F47 standard.
Setting
value
_ 1 _ _ SEMI-F47 function selection
Set the time [ms] of the [AL. 10.1 Voltage drop in the control circuit power]
200
occurrence.
Servo amplifier
MR-J4-10B(-RJ)
to
MR-J4-700B(-RJ)
MR-J4-11KB(-RJ)
to
MR-J4-22KB(-RJ)
MR-J4-60B4(-RJ)
to
MR-J4-22KB4(-RJ)
Table 17.7 Requirements conditions of SEMI-F47 standard
Instantaneous power
failure voltage
Rated voltage × 80%
Rated voltage × 70%
Rated voltage × 50%
Description
Bus voltage which triggers alarm
158 V DC
200 V DC
380 V DC
Permissible time of
instantaneous power
failure [s]
1
0.5
0.2
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